/* pc端 */
@media screen and (min-width:750px){
    .header_r i{
        display: none;
    }
}
/* 移动端 */
@media screen and (max-width:750px){
    /* 头部 */
    .header_center{
        width: 90%;
    }
    .header_r i{
        display: block;
    }
    .header_r ul{
        display: none;
    }
    /* 轮播图 */
    .banner .banner_center{
        width: 90%;
    }
    /* 不凡优势 */
    .advantage_center{
        width: 90%;
    }
    .advantage_content{
        flex-wrap: wrap;
    }
    .advantage_content .advantage_items{
        width: 49%;
        margin-bottom:20px;
    }
    .small_tit{
        padding-right: 20px;
    }
    .small_txt{
        display: none;
    }
    /* 课程介绍 */
    .introduce_center{
        width: 90%;
    }
    .introduce_content{
        flex-direction: column;
    }
    .introduce_items{
        width: 100%;
        margin-bottom: 20px;
    }
    .introduce_contxt .introduce_contxt_p1{
        font-size: 50px;
    }   
    
    /* 不凡 */
    .understand_content{
        width: 90%;
        flex-direction: column;
    }
    .understand_items{
        width: 100%!important;
    }
    .understand_l section:nth-child(1){
        order: 1;
    }
    .understand_l section:nth-child(2){
        order: 3;
    }
    .understand_l section:nth-child(3){
        opacity: 0;
        order: 2;
    }
    .understand_l section:nth-child(4){
        order: 4;
    }
    /* 免费公开课 */
    .free_center{
        width: 90%;
    }
    .free_tit{
        flex-direction: column;
    }
    .free_nav{
        margin-left: 0;
        margin-top: 20px;
    }
    .free_items_content{
        flex-direction: column;
    }
    .free_items_1{
        width: 100%;
        margin-bottom: 20px;
    }
    /* 学员就业 */
    .student_center{
        width: 90%;
    }
    .student_content{
        display: none;
    }
    .student_content_app{
        display: block;
    }
    /* 不凡说 */
    .bfsay_center{
        width: 90%;
    }
    .bfsay_content{
        flex-wrap: wrap;
    }
    .bfsay_items{
        width: 49%;
        margin-bottom: 20px;
    }
    /* 底部 */
    .footer_center{
        width: 90%;
        flex-direction: column;
    }
    .footer_center .footer_items{
        width: 100%!important;
        padding-bottom: 0;
    }
    .footer_items section:nth-child(1){
        order: 1;
    }
    .footer_items section:nth-child(2){
        order: 3;
    }
    .footer_items section:nth-child(3){
        order: 2;
    }
    .footer_items section:nth-child(4){
        order: 4;
    }
    .footer_center div:first-child{
        flex-direction: column;
    }
    .footer_center div:first-child section{
        width: 100%;
        text-align: center;
        margin-bottom: 18px;
    }
    .footer_center div:last-child img{
        width: 30%;
    }
    /* 友情链接 */
    .link_center{
        width: 90%;
        flex-direction: column;
        text-align: center;
    }
    .link_center section{
        width: 100%;
        margin: 5px 0;
    }
}
/* 超小平 */
@media screen and (max-width:350px){
    /* 不凡优势 */
    .small_tit{
        font-size: 12px;
    }
    /* 课程介绍 */
    .introduce_contxt .introduce_contxt_p1{
        font-size: 35px;
    } 
    .introduce_contxt .introduce_contxt_p2{
        width: 75px;
        padding: 5px 10px;
        font-size: 12px;
    }
}